Check engine and Traction control light on while wet outside.

I had same problem with my 2015 Tundra platinum mice chewed through some wire on my harness and chewed the fuel line and the injector line when it was wet it would act up took it in they found three wires chewed and injector line and fuel line

I have a 2001 toyota corolla and when i first start my car the VSC AND TRC LIGHT STAYS On and the vsc car light keeps flashing fast and after about 3 minutes slows down then stops and all the warning lights turn off. I have checked the fuel cap and and disconnected the battery and still comes on every time i start the car. If I drive a long way then the light maybe not come on or just come on for a few seconds then go off, but after sitting long time it comes on and has to sit until the light stops flashing and turns off. then the car drives like new. any tips?